Johann Sebastian Bach was one of the most prolific composers working in the early part of the 18th century. A distinguished organist, his church appointments demanded a vast output of sacred music. He did, however, find time to produce a small number of orchestral works. They included a fine series of harpsichord concertos, though much of the material he used is believed to have come from earlier unpublished woodwind concertos. Those original scores have been lost, but it has been possible to reconstruct the works for the oboe and oboe d'amore. The concertos contain some of the composer's best-loved and most famous melodies.